From patchwork Fri Jun 4 09:14:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnaud POULIQUEN X-Patchwork-Id: 12299207 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 24B98C47099 for ; Fri, 4 Jun 2021 09:14:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 12C8A6023F for ; Fri, 4 Jun 2021 09:14:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230019AbhFDJQH (ORCPT ); Fri, 4 Jun 2021 05:16:07 -0400 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:57386 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S229978AbhFDJQG (ORCPT ); Fri, 4 Jun 2021 05:16:06 -0400 Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 15496nHi028540; Fri, 4 Jun 2021 11:14:18 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=selector1; bh=hWeHL/dTAIQeVW4i01Rf5rhS3v5QysYOAQCXNxNaV/M=; b=sC0Tmmaju6/0qo5098Eflny3cZmxnwAvvb5+hugHxJ8TPw4aNrto4s4FQ1sFnodPVGUh ISQrRkyzJ9+LOG5w81q4qCKdb/KVHnyL8qAZWxcxin9t3tLMiqZuv1Tmp2xmXCbIOEbT 0+JCqdqtnte5iIT+wXdveiuS7N4ronQ+h28pohcsxI09iVBHHS/Kx0fa+yM06kGpphOT VBUNSNFX0swQnGraYCRjzWgz464WemmvZGIxcmmjn/WxAehEeNkEyzjZ423agIMmbjkG 7djwaHqs0MxWmKacF5idk/gbOf6GAeiwkuvlVgUwv1shpr4YqUMnwZgLEcAxU8iWu9gk tA== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 38yg960gre-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 04 Jun 2021 11:14:18 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 733A910003A; Fri, 4 Jun 2021 11:14:18 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag2node3.st.com [10.75.127.6]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 6513D216EEF; Fri, 4 Jun 2021 11:14:18 +0200 (CEST) Received: from localhost (10.75.127.50) by SFHDAG2NODE3.st.com (10.75.127.6) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 4 Jun 2021 11:14:17 +0200 From: Arnaud Pouliquen To: Bjorn Andersson , Ohad Ben-Cohen , Mathieu Poirier CC: , , , Subject: [PATCH 2/4] rpmsg: ctrl: Introduce RPMSG_RELEASE_DEV_IOCTL Date: Fri, 4 Jun 2021 11:14:04 +0200 Message-ID: <20210604091406.15901-3-arnaud.pouliquen@foss.st.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210604091406.15901-1-arnaud.pouliquen@foss.st.com> References: <20210604091406.15901-1-arnaud.pouliquen@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.50] X-ClientProxiedBy: SFHDAG1NODE2.st.com (10.75.127.2) To SFHDAG2NODE3.st.com (10.75.127.6) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.761 definitions=2021-06-04_05:2021-06-04,2021-06-04 signatures=0 Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org Implement the RPMSG_RELEASE_DEV_IOCTL to allow the user application to release a rpmsg device created either by the remote processor or with the RPMSG_CREATE_DEV_IOCTL call. Depending on the back-end implementation, the associated rpmsg driver is removed and a NS destroy rpmsg can be sent to the remote processor. Signed-off-by: Arnaud Pouliquen --- drivers/rpmsg/rpmsg_ctrl.c | 7 +++++++ include/uapi/linux/rpmsg.h | 5 +++++ 2 files changed, 12 insertions(+) diff --git a/drivers/rpmsg/rpmsg_ctrl.c b/drivers/rpmsg/rpmsg_ctrl.c index 4aa962df3661..cb19e32d05e1 100644 --- a/drivers/rpmsg/rpmsg_ctrl.c +++ b/drivers/rpmsg/rpmsg_ctrl.c @@ -98,6 +98,13 @@ static long rpmsg_ctrldev_ioctl(struct file *fp, unsigned int cmd, } break; + case RPMSG_RELEASE_DEV_IOCTL: + ret = rpmsg_release_channel(ctrldev->rpdev, &chinfo); + if (ret) + dev_err(&ctrldev->dev, "failed to release %s channel (%d)\n", + chinfo.name, ret); + break; + default: ret = -EINVAL; } diff --git a/include/uapi/linux/rpmsg.h b/include/uapi/linux/rpmsg.h index f9d5a74e7801..38639ba37438 100644 --- a/include/uapi/linux/rpmsg.h +++ b/include/uapi/linux/rpmsg.h @@ -38,4 +38,9 @@ struct rpmsg_endpoint_info { */ #define RPMSG_CREATE_DEV_IOCTL _IOW(0xb5, 0x3, struct rpmsg_endpoint_info) +/** + * Release a local rpmsg device. + */ +#define RPMSG_RELEASE_DEV_IOCTL _IOW(0xb5, 0x4, struct rpmsg_endpoint_info) + #endif